Petatlan Weather Records (MXN00012064)

Record envelope, standing records and threshold days for Petatlan (MXN00012064), Mexico, with 43 years of record.

Key Facts for Petatlan

Petatlan (MXN00012064) is a weather station in Mexico at 17.53 latitude and -101.23 longitude, 63 m (206 ft) above sea level.
The station reports from 1941 to 1983, 43 years of record.
1,464 records set at Petatlan still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Petatlan set a daily record high minimum temperature of 23.9 C (75.0 F) on 27 September 1983.

About the Station

Location: Mexico, 17.53 latitude, -101.23 longitude.
Elevation: 63 m (206 ft).
Period of record: 1941 to 1983, 43 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Petatlan. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Petatlan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	36.1 C (97.0 F)	13.9 C (57.0 F)	n/a	n/a
Feb	36.1 C (97.0 F)	13.3 C (55.9 F)	n/a	n/a
Mar	38.3 C (100.9 F)	11.1 C (52.0 F)	n/a	n/a
Apr	38.3 C (100.9 F)	14.4 C (57.9 F)	n/a	n/a
May	37.8 C (100.0 F)	13.3 C (55.9 F)	n/a	n/a
Jun	38.9 C (102.0 F)	16.7 C (62.1 F)	n/a	n/a
Jul	38.3 C (100.9 F)	18.3 C (64.9 F)	n/a	n/a
Aug	37.8 C (100.0 F)	18.3 C (64.9 F)	n/a	n/a
Sep	38.3 C (100.9 F)	17.2 C (63.0 F)	n/a	n/a
Oct	36.7 C (98.1 F)	16.1 C (61.0 F)	n/a	n/a
Nov	38.9 C (102.0 F)	12.2 C (54.0 F)	n/a	n/a
Dec	37.8 C (100.0 F)	12.2 C (54.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Petatlan still stand. 1943 holds the most, with 148.

Standing records at Petatlan by the year they were set
Year set	Standing records
1941	9
1942	60
1943	148
1945	107
1946	73
1947	6
1948	4
1949	3
1950	3
1951	1
1953	15
1954	2
1955	4
1956	31
1958	100
1961	45
1963	37
1964	66
1965	90
1966	46
1967	33
1968	45
1969	31
1970	37
1971	52
1972	35
1973	46
1974	36
1975	25
1976	58
1977	56
1978	19
1979	55
1980	30
1981	21
1982	11
1983	24

Wettest Day of Each Month

Oct: 315.7 mm (12.4 in)

The wettest day on record for each calendar month at Petatlan. The most was 315.7 mm (12.4 in) on 19 October 1947.

Record daily precipitation for each month at Petatlan
Month	Record daily precipitation (mm)	Date
Jan	80.8 mm (3.2 in)	21 January 1948
Feb	12.4 mm (0.5 in)	7 February 1978
Mar	27.4 mm (1.1 in)	5 March 1968
Apr	40.4 mm (1.6 in)	13 April 1958
May	80.8 mm (3.2 in)	30 May 1978
Jun	129.8 mm (5.1 in)	9 June 1954
Jul	206.8 mm (8.1 in)	13 July 1975
Aug	244.3 mm (9.6 in)	20 August 1969
Sep	217.9 mm (8.6 in)	26 September 1967
Oct	315.7 mm (12.4 in)	19 October 1947
Nov	110.0 mm (4.3 in)	12 November 1963
Dec	42.9 mm (1.7 in)	27 December 1974

Period of Record Coverage

1941 to 1983

38 years of record at Petatlan, 1941 to 1983. 11 years have data for under 90 percent of days and are left out of rankings: 1941, 1943, 1949, 1951, 1953, 1956, 1958, 1960 and others.

Days with data per year at Petatlan
Year	Days with data	Share of year	Complete
1941	14	4%	No
1942	365	100%	Yes
1943	273	75%	No
1945	364	100%	Yes
1946	354	97%	Yes
1947	365	100%	Yes
1948	334	91%	Yes
1949	307	84%	No
1950	365	100%	Yes
1951	212	58%	No
1953	275	75%	No
1954	365	100%	Yes
1955	365	100%	Yes
1956	144	39%	No
1958	86	24%	No
1960	57	16%	No
1961	61	17%	No
1963	184	50%	No
1964	366	100%	Yes
1965	365	100%	Yes
1966	363	99%	Yes
1967	361	99%	Yes
1968	364	99%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	364	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	364	100%	Yes
1975	365	100%	Yes
1976	365	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	365	100%	Yes
1981	364	100%	Yes
1982	365	100%	Yes
1983	273	75%	No

Latest Records

Latest records at Petatlan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 September 1983	Petatlan, MX	daily high min	23.9 C (75.0 F)	0.6 C (1.1 F)	5 years	11 of 100 (Routine)
26 September 1983	Petatlan, MX	daily high min	23.9 C (75.0 F)	1.1 C (2.0 F)	36 years	26 of 100 (Routine)
26 September 1983	Petatlan, MX	daily high max (Tie)	35.0 C (95.0 F)	tie	28 years	3 of 100 (Routine)
24 September 1983	Petatlan, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	36 years	3 of 100 (Routine)
18 September 1983	Petatlan, MX	daily low min (Tie)	20.6 C (69.1 F)	tie	40 years	4 of 100 (Routine)
9 September 1983	Petatlan, MX	daily low min (Tie)	20.6 C (69.1 F)	tie	40 years	4 of 100 (Routine)
8 September 1983	Petatlan, MX	daily low max	25.6 C (78.1 F)	1.1 C (2.0 F)	13 years	13 of 100 (Routine)
4 September 1983	Petatlan, MX	daily rain	40.4 mm (1.6 in)	10.2 mm (0.4 in)	25 years	14 of 100 (Routine)
2 September 1983	Petatlan, MX	daily low max	25.6 C (78.1 F)	1.6 C (2.9 F)	9 years	13 of 100 (Routine)
1 September 1983	Petatlan, MX	daily low max (Tie)	27.8 C (82.0 F)	tie	4 years	1 of 100 (Routine)
26 August 1983	Petatlan, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	37 years	3 of 100 (Routine)
25 August 1983	Petatlan, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	2 years	1 of 100 (Routine)
20 August 1983	Petatlan, MX	daily high min (Tie)	22.8 C (73.0 F)	tie	40 years	4 of 100 (Routine)
11 August 1983	Petatlan, MX	daily rain	101.3 mm (4.0 in)	84.5 mm (3.3 in)	8 years	45 of 100 (Notable)
4 August 1983	Petatlan, MX	daily high min (Tie)	23.9 C (75.0 F)	tie	5 years	1 of 100 (Routine)
17 July 1983	Petatlan, MX	daily low max	26.7 C (80.1 F)	3.3 C (5.9 F)	0 years	21 of 100 (Routine)
16 July 1983	Petatlan, MX	daily rain	37.8 mm (1.5 in)	14.9 mm (0.6 in)	25 years	17 of 100 (Routine)
14 July 1983	Petatlan, MX	daily rain	95.3 mm (3.8 in)	30.5 mm (1.2 in)	40 years	28 of 100 (Routine)
11 July 1983	Petatlan, MX	daily high max (Tie)	35.6 C (96.1 F)	tie	12 years	1 of 100 (Routine)
7 July 1983	Petatlan, MX	daily high min (Tie)	23.3 C (73.9 F)	tie	9 years	1 of 100 (Routine)

Climate Trend

23 complete years, 1942 to 1982

One stripe for each of 23 complete years at Petatlan, 1942 to 1982. Blue stripes are years cooler than the station's own mean of 26.8 C (80.3 F); red stripes are warmer. The coolest year was 1971, at 26.3 C (79.3 F), and the warmest was 1945, at 27.8 C (82.1 F). The strongest colour marks a difference of 1.0 C (1.8 F).

Annual mean temperature at Petatlan as warming stripes, 1942 to 1982
Year	Annual mean temperature	Difference from the station mean
1942	27.1 C	+0.27 C
1945	27.8 C	+0.98 C
1946	27.3 C	+0.42 C
1947	26.8 C	-0.08 C
1964	26.8 C	-0.02 C
1965	26.9 C	+0.02 C
1966	26.5 C	-0.32 C
1967	26.5 C	-0.35 C
1968	26.5 C	-0.32 C
1969	26.9 C	+0.08 C
1970	26.7 C	-0.12 C
1971	26.3 C	-0.55 C
1972	27.2 C	+0.34 C
1973	26.5 C	-0.33 C
1974	26.5 C	-0.30 C
1975	26.5 C	-0.39 C
1976	27.1 C	+0.24 C
1977	27.6 C	+0.76 C
1978	26.8 C	-0.03 C
1979	26.3 C	-0.52 C
1980	27.1 C	+0.27 C
1981	26.4 C	-0.43 C
1982	27.2 C	+0.40 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1941 to 1983

Yearly extremes at Petatlan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	1945	36.7 C (98.1 F)	38
Coldest night (TNn)	11.1 C (52.0 F)	1965	15.6 C (60.1 F)	38
Wettest day (Rx1day)	315.7 mm (12.4 in)	1947	94.0 mm (3.7 in)	39
Wettest five days (Rx5day)	641.9 mm (25.3 in)	1955	159.8 mm (6.3 in)	39
Longest dry spell (CDD)	181 days	1945	122 days	39

Hottest day (TXx)

The hottest day of the year at Petatlan, 1941 to 1983. The record is 38.9 C (102.0 F) in 1945, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Petatlan by year
Year	Hottest day (TXx)
1941	36.7 C (98.1 F)
1942	38.3 C (100.9 F)
1943	35.6 C (96.1 F)
1945	38.9 C (102.0 F)
1946	36.7 C (98.1 F)
1947	33.9 C (93.0 F)
1948	33.9 C (93.0 F)
1949	33.3 C (91.9 F)
1950	33.9 C (93.0 F)
1951	32.8 C (91.0 F)
1953	36.7 C (98.1 F)
1954	37.8 C (100.0 F)
1955	35.6 C (96.1 F)
1956	35.0 C (95.0 F)
1957	n/a
1958	38.9 C (102.0 F)
1960	33.9 C (93.0 F)
1961	37.2 C (99.0 F)
1963	37.8 C (100.0 F)
1964	37.8 C (100.0 F)
1965	38.9 C (102.0 F)
1966	36.7 C (98.1 F)
1967	36.1 C (97.0 F)
1968	36.1 C (97.0 F)
1969	37.2 C (99.0 F)
1970	38.3 C (100.9 F)
1971	36.1 C (97.0 F)
1972	37.8 C (100.0 F)
1973	36.7 C (98.1 F)
1974	37.2 C (99.0 F)
1975	38.3 C (100.9 F)
1976	38.3 C (100.9 F)
1977	38.3 C (100.9 F)
1978	36.7 C (98.1 F)
1979	38.3 C (100.9 F)
1980	36.7 C (98.1 F)
1981	36.7 C (98.1 F)
1982	37.2 C (99.0 F)
1983	36.7 C (98.1 F)

Coldest night (TNn)

The coldest night of the year at Petatlan, 1941 to 1983. The record is 11.1 C (52.0 F) in 1965, marked on the chart; the median year is 15.6 C (60.1 F).

Coldest night (TNn) at Petatlan by year
Year	Coldest night (TNn)
1941	20.0 C (68.0 F)
1942	14.4 C (57.9 F)
1943	16.1 C (61.0 F)
1945	16.7 C (62.1 F)
1946	17.8 C (64.0 F)
1947	17.8 C (64.0 F)
1948	20.6 C (69.1 F)
1949	20.6 C (69.1 F)
1950	20.6 C (69.1 F)
1951	20.0 C (68.0 F)
1953	20.6 C (69.1 F)
1954	20.6 C (69.1 F)
1955	20.6 C (69.1 F)
1956	18.9 C (66.0 F)
1957	n/a
1958	20.6 C (69.1 F)
1960	21.1 C (70.0 F)
1961	12.2 C (54.0 F)
1963	17.2 C (63.0 F)
1964	13.9 C (57.0 F)
1965	11.1 C (52.0 F)
1966	14.4 C (57.9 F)
1967	14.4 C (57.9 F)
1968	14.4 C (57.9 F)
1969	15.6 C (60.1 F)
1970	13.9 C (57.0 F)
1971	12.8 C (55.0 F)
1972	15.0 C (59.0 F)
1973	16.1 C (61.0 F)
1974	15.0 C (59.0 F)
1975	14.4 C (57.9 F)
1976	13.3 C (55.9 F)
1977	15.6 C (60.1 F)
1978	15.0 C (59.0 F)
1979	13.3 C (55.9 F)
1980	15.0 C (59.0 F)
1981	15.0 C (59.0 F)
1982	13.9 C (57.0 F)
1983	15.6 C (60.1 F)

Wettest day (Rx1day)

The wettest day of the year at Petatlan, 1941 to 1983. The record is 315.7 mm (12.4 in) in 1947, marked on the chart; the median year is 94.0 mm (3.7 in).

Wettest day (Rx1day) at Petatlan by year
Year	Wettest day (Rx1day)
1941	0.0 mm (0.00 in)
1942	89.9 mm (3.5 in)
1943	43.4 mm (1.7 in)
1945	199.9 mm (7.9 in)
1946	61.5 mm (2.4 in)
1947	315.7 mm (12.4 in)
1948	80.8 mm (3.2 in)
1949	90.7 mm (3.6 in)
1950	90.4 mm (3.6 in)
1951	60.5 mm (2.4 in)
1953	60.7 mm (2.4 in)
1954	179.8 mm (7.1 in)
1955	194.8 mm (7.7 in)
1956	61.5 mm (2.4 in)
1957	62.0 mm (2.4 in)
1958	40.4 mm (1.6 in)
1960	60.5 mm (2.4 in)
1961	0.0 mm (0.00 in)
1963	110.0 mm (4.3 in)
1964	73.9 mm (2.9 in)
1965	100.8 mm (4.0 in)
1966	106.9 mm (4.2 in)
1967	217.9 mm (8.6 in)
1968	115.8 mm (4.6 in)
1969	244.3 mm (9.6 in)
1970	126.0 mm (5.0 in)
1971	90.4 mm (3.6 in)
1972	117.3 mm (4.6 in)
1973	100.8 mm (4.0 in)
1974	96.8 mm (3.8 in)
1975	206.8 mm (8.1 in)
1976	270.8 mm (10.7 in)
1977	94.0 mm (3.7 in)
1978	80.8 mm (3.2 in)
1979	150.9 mm (5.9 in)
1980	75.9 mm (3.0 in)
1981	137.9 mm (5.4 in)
1982	51.8 mm (2.0 in)
1983	101.3 mm (4.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Petatlan, 1941 to 1983. The record is 641.9 mm (25.3 in) in 1955, marked on the chart; the median year is 159.8 mm (6.3 in).

Wettest five days (Rx5day) at Petatlan by year
Year	Wettest five days (Rx5day)
1941	0.0 mm (0.00 in)
1942	137.5 mm (5.4 in)
1943	118.8 mm (4.7 in)
1945	334.0 mm (13.1 in)
1946	121.7 mm (4.8 in)
1947	331.2 mm (13.0 in)
1948	98.1 mm (3.9 in)
1949	201.7 mm (7.9 in)
1950	202.4 mm (8.0 in)
1951	65.5 mm (2.6 in)
1953	120.9 mm (4.8 in)
1954	310.8 mm (12.2 in)
1955	641.9 mm (25.3 in)
1956	131.5 mm (5.2 in)
1957	122.7 mm (4.8 in)
1958	83.5 mm (3.3 in)
1960	118.4 mm (4.7 in)
1961	0.0 mm (0.00 in)
1963	170.7 mm (6.7 in)
1964	107.7 mm (4.2 in)
1965	110.7 mm (4.4 in)
1966	157.2 mm (6.2 in)
1967	489.8 mm (19.3 in)
1968	176.2 mm (6.9 in)
1969	307.1 mm (12.1 in)
1970	279.9 mm (11.0 in)
1971	143.4 mm (5.6 in)
1972	176.2 mm (6.9 in)
1973	154.6 mm (6.1 in)
1974	171.0 mm (6.7 in)
1975	341.3 mm (13.4 in)
1976	310.2 mm (12.2 in)
1977	159.8 mm (6.3 in)
1978	126.7 mm (5.0 in)
1979	198.7 mm (7.8 in)
1980	184.6 mm (7.3 in)
1981	303.9 mm (12.0 in)
1982	97.3 mm (3.8 in)
1983	185.4 mm (7.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Petatlan, 1941 to 1983. The record is 181 days in 1945, marked on the chart; the median year is 122 days.

Longest dry spell (CDD) at Petatlan by year
Year	Longest dry spell (CDD)
1941	14 days
1942	136 days
1943	61 days
1945	181 days
1946	132 days
1947	82 days
1948	49 days
1949	151 days
1950	156 days
1951	139 days
1953	51 days
1954	152 days
1955	156 days
1956	60 days
1957	47 days
1958	23 days
1960	5 days
1961	61 days
1963	49 days
1964	140 days
1965	77 days
1966	63 days
1967	141 days
1968	71 days
1969	165 days
1970	103 days
1971	144 days
1972	148 days
1973	93 days
1974	115 days
1975	128 days
1976	151 days
1977	134 days
1978	110 days
1979	153 days
1980	122 days
1981	135 days
1982	135 days
1983	72 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Download the Data

Data for Petatlan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Petatlan threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).